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(12) Patent: | (11) CA 2267231 |
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(54) English Title: | DIMPLED CIRCULAR SAW BLADE |
(54) French Title: | LAME DE SCIE CIRCULAIRE A ECHANCRURES |
Status: | Expired |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | BORDEN LADNER GERVAIS LLP |
(74) Associate agent: | |
(45) Issued: | 2003-09-16 |
(86) PCT Filing Date: | 1997-09-08 |
(87) Open to Public Inspection: | 1998-04-23 |
Examination requested: | 2002-03-26 |
Availability of licence: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/US1997/015767 |
(87) International Publication Number: | WO1998/016343 |
(85) National Entry: | 1999-03-29 |
(30) Application Priority Data: | ||||||
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An improved circular saw blade having first and second planar surfaces is
provided
which has a plurality of dimples which formed one or both of such surfaces of
the blade.
The dimples each have a perimeter and include a circumferential ridge which
extends above
the surfaces of the body of the blade. When a side load is applied to the work
piece, the
ridges contact one of the walls defining the kerf being cut that is forced by
the load against
the blade, so that the surface of the body of the blade is spaced from the
wall. The dimples
are preferably formed by cold working the blade, which stiffens the blade, and
reducing the
vibration of the blade during the cutting procedure. The dimples and their
ridges also
provide greater heat dissipation, and tend to provide a laminar flow of air
over the surface
of the blade, acting much as the dimples of a golf ball.
Lame améliorée (1) de scie circulaire possédant une pluralité d'échancrures (13) pratiquées par formage à froid sur le corps de ladite lame. Ces échancrures (13) présentent chacune une arête périphérique (15) s'étendant au-dessus des surfaces (3, 5) du corps de la lame. Quand on exerce une charge latérale sur une pièce, les arêtes (15) viennent en contact avec l'une des parois définissant le trait de scie exercé par la lame sur laquelle porte la charge, de façon à éloigner de la paroi la surface du corps de la lame. On obtient les échancrures (13) par formage à froid de la lame (1), ce qui rigidifie cette dernière et limite ses vibrations pendant la coupe. Les échancrures (13) et leurs arêtes (15) produisent également une dissipation de chaleur plus importante et tendent à faire passer un écoulement laminaire d'air au-dessus de la surface de la lame, ce qui exerce un effet pratiquement semblable à celui d'une balle de golf.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Administrative Status , Maintenance Fee and Payment History should be consulted.
Title | Date |
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Forecasted Issue Date | 2003-09-16 |
(86) PCT Filing Date | 1997-09-08 |
(87) PCT Publication Date | 1998-04-23 |
(85) National Entry | 1999-03-29 |
Examination Requested | 2002-03-26 |
(45) Issued | 2003-09-16 |
Expired | 2017-09-08 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Amount Paid | Paid Date |
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Registration of a document - section 124 | $100.00 | 1999-03-29 | ||
Application Fee | $300.00 | 1999-03-29 | ||
Maintenance Fee - Application - New Act | 2 | 1999-09-08 | $100.00 | 1999-05-03 |
Maintenance Fee - Application - New Act | 3 | 2000-09-08 | $100.00 | 2000-05-16 |
Maintenance Fee - Application - New Act | 4 | 2001-09-10 | $100.00 | 2001-05-30 |
Request for Examination | $400.00 | 2002-03-26 | ||
Maintenance Fee - Application - New Act | 5 | 2002-09-09 | $150.00 | 2002-04-08 |
Maintenance Fee - Application - New Act | 6 | 2003-09-08 | $150.00 | 2003-04-09 |
Final Fee | $300.00 | 2003-06-19 | ||
Maintenance Fee - Patent - New Act | 7 | 2004-09-08 | $200.00 | 2004-08-23 |
Maintenance Fee - Patent - New Act | 8 | 2005-09-08 | $200.00 | 2005-08-16 |
Maintenance Fee - Patent - New Act | 9 | 2006-09-08 | $200.00 | 2006-08-22 |
Maintenance Fee - Patent - New Act | 10 | 2007-09-10 | $250.00 | 2007-08-23 |
Maintenance Fee - Patent - New Act | 11 | 2008-09-08 | $250.00 | 2008-08-25 |
Maintenance Fee - Patent - New Act | 12 | 2009-09-08 | $250.00 | 2009-08-25 |
Maintenance Fee - Patent - New Act | 13 | 2010-09-08 | $250.00 | 2010-08-25 |
Maintenance Fee - Patent - New Act | 14 | 2011-09-08 | $250.00 | 2011-08-29 |
Maintenance Fee - Patent - New Act | 15 | 2012-09-10 | $450.00 | 2012-08-27 |
Maintenance Fee - Patent - New Act | 16 | 2013-09-09 | $450.00 | 2013-08-26 |
Maintenance Fee - Patent - New Act | 17 | 2014-09-08 | $450.00 | 2014-08-25 |
Maintenance Fee - Patent - New Act | 18 | 2015-09-08 | $450.00 | 2015-08-24 |
Maintenance Fee - Patent - New Act | 19 | 2016-09-08 | $450.00 | 2016-08-25 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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VERMONT AMERICAN CORPORATION |
Past Owners on Record |
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PHILLIPS, GREGORY A. |
WARD, KEVIN M. |